Temporary binder.



o. A. HARTMANN.

TEMPORARY BINDER. APrLIoATIoN VHmm APR.11,1908.

Patented Ma.9,19o9.

THE Nmzms PETERS co., wAsmNcToN. u. c.

. muren srerns rarnvr cerros.

CHARLES A. HARTMANN, OF WASHINGTON, DISTRICT OF COLUMBIA.

TEMPORARY BINDER.

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains tomake and use the same.

The invention relates to temporary binders in which the loose leaves aresecured be? tween the backs by means of a cord or the like which passesthrough two tabs or binder strips, and the object of the invention is toprovide an improved form of binder strip or tab which is simpler inconstruction and less liable to deterioration than the forms of tabs orstrips heretofore employed for this purpose and which may be associatedwith the iiexible cord to afford a comparatively cheap and highlyefficient means for securing the loose sheets between the covers.

In the accompanying drawings, Figure l is a perspective view of atemporary binder having the improvements applied thereto. Fig. 2 is anenlarged cross sectional view thereof. Fig. 3 is an enlarged detail viewof the holding clip for the cord, illustrating the relation thereof withthe binding strip or tab. Fig. 4 is an enlarged cross section throughone of the binding strips or tabs.

Referring to the drawings, a, a indicate the covers which may be of theusual form connected by the flexible center or back piece commonlyemployed in covers of this character. In binders as heretoforeconstructed, it has been customary to form the binder strips or tabs bymeans of which the loose sheets or leaves are secured in position, of adouble thickness of textile material usually canvas or heavy muslin andsometimes to reinforce the same by inclosing astrip of wood, metal orthe like within the fold, the edges of the folded fabric strip beingsecured to the cover. It has been found, by actual experience, that thetab as thus constructed wears rapidly along the edges and the relativelyshar turns or corners where it passes over the inc osed reinforcingstrip. rIhe wear on the fabric of the tabs is accentuated by the factthat the fabric comes loose from the reinforcing strip contained withinthe fold of the fabric, in cases where no reinforcement is employed,

Specification of Letters Patent.

Application filed April 11, 1908.

Patented March 9, 1909.

Serial No 426,505.

the fabric of the tab quickly wears and renders the binder practicallyuseless.

According to my invention, the wear on the tabs is almost entirelyobviated and the whole is strengthened andY stiifened to such a degreethat the tabs will frequently out` last the covers themselves. Accordingto my invention, I make each tab of a folded strip of fabric, such ascanvas, duck or other suitable material, the edges of which are securedto the upper and lower faces of the cover pieces a and preferablyinclosed by the material with which the inner and outer faces of saidcovers a are overlaid. Within the fold of the tab c there is placed awire or suitable rod d and surrounding the folded strip c and the wireinclosed therein is a folded strip of metal e of a width to extend for aconsiderable distance on both sides of the folded strip c and extendingsubstantially throughout the length of the tab. Said binding strip e isfolded over flat against the textile strip c and firmly embraces thesame, together with the inclosed wire or rod d, as indicated moreparticularly in Fig. el. In order to retain the binder strip e inposition and prevent any movement between textile strip c and saidbinder strip, the latter is indented as at f in Fig. 4. Each binderstrip is conveniently provided with two eyelets g which are rivetedthrough the binder strips and the textile material and are adapted toreceive the cord or other flexible means upon which the loose sheets orleaves are strung.

The ends of the cord 9: are passed through the registering holes in theends of the binder strips or tabs, as indicated in Fig. l, and in orderto lock the cord ends firmly in position and still permit them to bereadily cast off to insert a new leaf or to remove an old one, there areprovided on one of the strips, spring clips 7L which are convenientlysecured to the binder strip by means of the eyelets g which pass throughthe ends of said spring clips as shown more particularly in Fig. 3. Inorder to firmly secure each spring clip to the binder tab, an additionalrivet 'i may be passed through each clip 7L and the binder tab, at apoint adjacent to the eyelet g, which has the effect of preventing anyrotary movement of the clip about the eyelet. It will be noted that theend of each spring clip 7i. is bent upward to facilitate the insertionof the cord a: under the clip and between the same and the metal plateof the clamping strip e.

IOO

From the foregoing description7 the Inode of using the binder Will beclear. The sheets to be bound are, of course, provided along one edgewith perorations toregister With the eyelets g. To insert a sheet ornum.-

ber of sheets in the binder, the endsn of the` cord x are released fromthe spring clips h and Withdrawn through the eyelets g of the tab whichholds said clips. Both Aends of the cord are then threaded through theleaves lt0 be inserted and passed back through the eyelets g and caughtunder the ends of the spring clips h, as indicated in Fig. l. To removeany leaf or leaves already mounted in the binder, the operation ispractically the saine, lexcept that when the Aends of the .Cord havebeen released and drawn through the eyelets g, the desired leaves orsheets are slipped oil of the cord and removed from beT In a binder, thecombination with the covers of binder tabs, each comprising a dou-4 bleply of fabric forming a loop the respective plies beingsecured toopposite sides of the cover sections, binder tabs secured thereto andhaving registering holes for the cord or tape, each tab comprising afolded fabric loop, a Wire in the loop and a folded metal stripinclosing the fabric loop and the wire, and spring clips on one of saidtabs to hold the ends of the cord or tape.

l. A tab for temporary binder-s comprising a folded fabric strip, a wirein the fold thereof and a clampingstrip of metal embracing the fabricfold and the Wire.

In testimony whereof l aflix my signature; in presence of tWo Witnesses.

CHARLES A. HARTMANN.

lllitnesses.;

ARTHUR L. BRYANT, C Hns. J. GNEIM..

